#pragma once

#include<string>
#include<cstring>
#include<cerrno>
#include<assert.h>
#include<signal.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<unistd.h>
#include"Log.hpp"
#include<sys/socket.h>
#include<sys/types.h>

class Sock
{
private:
    const static int gbacklog = 20;
public:
    Sock(){}
    int Socket()
    {
        // 创建套接字socket
        int listensock = socket(AF_INET,SOCK_STREAM,0);
        if(listensock < 0)
        {
            logMessage(FATAL,"create socket error, %d:%s",errno,strerror(errno));
            exit(2);
        }
        logMessage(NORMAL,"create socket success, listensock:%d",listensock);
        return listensock;
    }
    void Bind(int sock,uint16_t port,std::string ip = "0.0.0.0")
    {
        // bind -- 文件+网络
        struct sockaddr_in local;
        memset(&local,0,sizeof local);
        local.sin_family = AF_INET;
        local.sin_port = htons(port);//主机转网络
        inet_pton(AF_INET,ip.c_str(),&local.sin_addr);
        if(bind(sock , (struct sockaddr*)&local , sizeof(local))<0)
        {
            logMessage(FATAL,"bind error,%d:%s",errno,strerror(errno));
            exit(3);
        }
    }
    void Listen(int sock)
    {
        // 因为TCP是面向连接的，当我们正式通信的时候，需要先建立连接
        if (listen(sock, gbacklog) < 0)
        {
            logMessage(FATAL, "listen error, %d:%s", errno, strerror(errno));
            exit(4);
        }
        logMessage(NORMAL, "init server success");
    }

    // const std::string & :输入型参数
    // std::string * :输出型参数
    // std::string & :输入输出型参数
    int Accept(int listensock,std::string *ip,uint16_t *port)
    {
        struct sockaddr_in src;
        socklen_t len = sizeof(src);
        int servicesock = accept(listensock, (struct sockaddr *)&src, &len);
        if (servicesock < 0)
        {
            logMessage(ERROR, "accept error, %d:%s", errno, strerror(errno));
            return -1;
        }
        if(port) *port = ntohs(src.sin_port);//网络转主机
        if(ip) *ip = inet_ntoa(src.sin_addr);//网络转主机
        return servicesock;
    }
    bool Connect(int sock,const std::string &server_ip,const uint16_t &server_port)
    {
        struct sockaddr_in server;
        memset(&server,0,sizeof server);
        server.sin_family = AF_INET;
        server.sin_port = htons(server_port);
        server.sin_addr.s_addr = inet_addr(server_ip.c_str());
        
        if(connect(sock,(struct sockaddr*)&server,sizeof(server)) == 0) return true;
        else return false;
    }
    ~Sock(){}
};